Advertisement

Topics

PubMed Journal Database | Journal of drug targeting RSS

13:43 EDT 21st August 2017 | BioPortfolio

The US National Library of Medicine and National Institutes of Health manage PubMed.gov which comprises of more than 21 million records, papers, reports for biomedical literature, including MEDLINE, life science and medical journals, articles, reviews, reports and  books.  BioPortfolio aims to publish relevant information on published papers, clinical trials and news associated with users selected topics.

For example view all recent relevant publications on Epigenetics and associated publications and clincial trials.

Showing PubMed Articles 1–25 of 200 from Journal of drug targeting

Silk nanoparticles: proof of lysosomotropic anticancer drug delivery at single-cell resolution.

Silk nanoparticles are expected to improve chemotherapeutic drug targeting to solid tumours by exploiting tumour pathophysiology, modifying the cellular pharmacokinetics of the payload and ultimately resulting in trafficking to lysosomes and triggering drug release. However, experimental proof for lysosomotropic drug delivery by silk nanoparticles in live cells is lacking and the importance of lysosomal pH and enzymes controlling drug release is currently unknown. Here, we demonstrate, in live single human ...

pH-sensitive polymersomes: controlling swelling via copolymer structure and chemical composition.

pH-sensitive vesicles used as drug delivery systems (DDSs) are generally composed of protonable copolymers. The disaggregation of these nanoparticles (NPs) during drug release implies the dispersion of positively charged cytotoxic polyelectrolytes in the human body. To alleviate such issue, we synthesised A(BC)n amphiphilic block copolymers with linear (n = 1) and branched (n = 2) architectures to obtain pH-sensitive vesicles capable of releasing drugs in acidic conditions via controlled swelling in...

Recent advances in targeted delivery of tissue plasminogen activator for enhanced thrombolysis in ischemic stroke.

Tissue plasminogen activator (tPA) is the only FDA approved medical treatment for the ischemic stroke. However, it associates with some inevitable limitations, including: short therapeutic window, extremely short half-life and low penetration in large clots. Systemic administration (i.v./i.a.) may lead to complications such as hemorrhagic conversion in the brain and relapse in the form of re-occlusion. Furthermore, ultrasound has been utilized in combination with contrast agents, echogenic liposome, microsp...

Targeted-Mitochondria Antioxidants Therapeutic Implications in Inflammatory Bowel Disease.

The role of the mitochondria, particularly its implications in cellular redox and oxidative balance is important for cell survival, and is involved in a variety of human diseases including Inflammatory Bowel Disease. In this review we address mitochondria physiology and reactive oxygen species as cognate to Inflammatory Bowel Disease. Several studies have reported altered mitochondria function in intestinal epithelium in Inflammatory Bowel Disease. However, mitochondrion significance in this disease has not...

Therapeutic Efficacy of Folate Receptor-Targeted Amphiphilic Cyclodextrin Nanoparticles as a Novel Vehicle For Paclitaxel Delivery In Breast Cancer.

Purpose The aim of this study is to test folate-conjugated cyclodextrin nanoparticles (FCD-1 and FCD-2) as a vehicle for reducing toxicity and increasing the antitumor efficacy of paclitaxel especially for metastatic breast cancer. Methods For the evaluation of PCX-loaded FCD nanoparticles, animal studies were realized in terms of survival rate, tumor size, weight change, metastazis and histopathological examination. Results FCD-1 displayed significant advantages such as efficient targeting of folate recept...

Contribution of nucleophosmin overexpression to multidrug resistance in breast carcinoma.

Multidrug resistance (MDR) is a serious obstacle in breast cancer patients which limits chemotherapeutic drugs application. Our previous study confirmed that overexpression of nucleophosmin (NPM) was closely related to MDR in methotrexate-resistant breast cancer cells (MCF-7/MTX), and NPM could be a potential therapeutic target for chemoresistance. In this work, we aim to investigate NPM-mediated resistance mechanism in breast carcinoma. The NPM level was strongly positive in breast carcinoma tissues compar...

Characterization of an encapsulated insulin secreting human pancreatic beta cell line in a modular microfluidic device.

Type I diabetes mellitus is characterized by the destruction of the insulin producing beta cells within the pancreas by the immune system. After the success of Edmonton protocol, islet transplantation has shown to be a promising therapy, but with the Achilles´ heel of the need of using immunosuppressive drugs. Currently, cell encapsulation technology represents a real alternative to protect transplanted islets from the host´s immune attack. Although preliminary in vitro studies with encapsulated cells hav...

Preparation of chondroitin sulfate-adipic acid dihydrazide-doxorubicin conjugate and its antitumor characteristics against LLC cells.

Macromolecule-antitumor drug conjugates can reach tumor sites specifically via the enhanced permeability and retention (EPR) effect. It is desirable to release the drug efficiently from the conjugate at acidic pH in the tumor tissue or in the endosomes of cancer cells. In this study, we attempted to produce a carrier system with a labile chemical bond at acidic pH. Adipic acid dihydrazide (ADH)-chondroitin sulfate (CS) (termed CS-ACH) was synthesized by a two step method, with the introduction of formyl gro...

Polymer based drug delivery: The quest for local targeting of inflamed intestinal mucosa.

Colon specific drug delivery has found important applications in the wide array of diseases affecting the lower intestinal tract. Recent developments and advancements in the polymer based colonic delivery ensure targeted therapeutics with reduced systemic adverse effects. Latest progress in the understanding of polymer science has decorated a polymer based formulation with a number of special features, which may prove effective in the localized drug targeting at specific sites of the intestine. Upon oral ad...

The efficacy of WGA modified daunorubicin anti-resistant liposomes in treatment of drug-resistant MCF-7 breast cancer.

Breast cancer is the most common malignancy and remains a leading cause of cancer-related deaths in female. Chemotherapy failure of breast cancer is mainly associated with multidrug resistance of cancer cells.

Malaria treatment using novel nano based drug delivery systems.

We reside in an era of technological innovation and advancement despite which infectious diseases like malaria remain to be one of the greatest threats to the humans. Mortality rate caused by malaria disease is a huge concern in the 21(st) century. Multiple drug resistance and non-specific drug targeting of the most widely used drugs are the main reasons/drawbacks behind the failure in malarial therapy. Dose related toxicity because of high doses is also a major concern. Therefore, to overcome these problem...

Effects of cell penetrating Notch inhibitory peptide conjugated to elastin-like polypeptide on glioblastoma cells.

Notch pathway was found to be activated in most glioblastomas (GBM), underlining the importance of Notch in formation and recurrence of GBM. In this study, a Notch inhibitory peptide, dominant negative MAML (dnMAML), was conjugated to Elastin-like polypeptide (ELP) for tumor targeted delivery. ELP is a thermally responsive polypeptide that can be actively and passively targeted to the tumor site by localized application of hyperthermia. This complex was further modified with the addition of a cell penetrati...

PTEN and TRAIL genes- loaded zein nanoparticles as potential therapy for hepatocellular carcinoma.

Gene therapy is one of the recent approaches in treatment of hepatocellular carcinoma (HCC). Development of a vector or vehicle that can selectively and efficiently deliver the gene to target cells with minimal toxicity is an urgent demand. In the present study, Phosphatase and Tensin homolog (PTEN) and Tumor Necrosis Factor (TNF)-Related Apoptosis-Inducing Ligand (TRAIL) genes were loaded to Zein nanoparticles (ZNPs). The formulated PTEN and TRAIL-loaded ZNPs were tested for their in-vitro and in-vivo pote...

Recent developments in trans-sialidase inhibitors of Trypanosoma cruzi.

Chagas is a lethal chronic disease that currently affects 8 to 10 million people worldwide, primarily in South and Central America. Trypanosoma cruzi trans-sialidase is an enzyme that is of vital importance for the survival of the parasite due to its key role in the transfer of sialic acid from the host to the parasite surface and it also helps the parasite combat the host´s immune system. This enzyme has no equivalent human enzyme, thus it has become an interesting target for the development of inhibitors...

Dissolving microneedles for enhanced local delivery of capsaicin to rat skin tissue.

Capsaicin-loaded dissolving microneedles (DMNs) were prepared to investigate the analgesic effect of capsaicin on the skin. The dimensions of each microneedle were as follows: diameter of the basement, 17 mm; length, 500 μm; and width, 300 μm. The average capsaicin content in the DMNs loaded with a low and high dose of capsaicin was 8.8 ± 0.5 mg and 12.5 ± 0.4 mg. Almost all of the capsaicin, 99.3 ± 4.1% and 99.7 ± 2.2% for low-dose and high-dose DMNs were released within 20 min. High amounts ...

Recent Advances in targeting mTOR signaling pathway using small molecule inhibitors.

Targeted-based cancer therapy (TBCT) or personalized medicine is one of the main treatment modalities for cancer that has been developed to decrease the undesirable effects of chemotherapy. Targeted therapy inhibits the growth of tumor cells by interrupting with particular molecules required for tumorigenesis and proliferation of tumor cells rather than interfering with dividing normal cells. Therefore, targeted therapies are anticipated to be more efficient than former tumor treatment agents with minimal s...

Pieter Cullis' quest for a lipid-based, fusogenic delivery system for nucleic acid therapeutics: success with siRNA so what about mRNA?

For the best part of 40 years, lipids and membrane fusion have been at the center of Pieter's research. Projects range from the purely academic quest of understanding the roles of lipids in biological membranes, to the translation of this knowledge into the most advanced lipid nanoparticle (LNP) drug delivery systems in clinical trials to-date. Pieter's pioneering work in lipid polymorphism and characterizing the unique properties of unsaturated phospatidyethanolamines (PE), together with the introduction o...

Development of a double-stranded siRNA labelling method by using (99m)Tc and single photon emission computed tomography imaging.

In vivo biodistribution of small interfering RNAs (siRNAs) is important to develop them for medical use. Therefore, novel single photon emitter-labelled siRNA was prepared by using diethylenetriamine-N,N,N',N″,N″-pentaacetic acid (DTPA) and poly(A) polymerase, and subsequently, real-time analysis of siRNA trafficking was performed by using single photon emission computed tomography (SPECT). This study aimed at assessing the use of (99m)Tc-radiolabelled siRNA targeting lacZ to detect lacZ expression in v...

Anti-cancer effect of R3V6 peptide-mediated delivery of an anti-microRNA-21 antisense-oligodeoxynucleotide in a glioblastoma animal model.

MicroRNA-21 (miR-21) expression in glioblastoma inhibits the expression of pro-apoptotic genes, thereby promoting tumor growth. In a previous study, it was shown that the amphiphilic R3V6 peptide is an efficient carrier of the anti-miR-21 antisense oligodeoxynucleotide (antisense-ODN) into cells in vitro. In the current study, in vivo delivery of antisense-ODN using the R3V6 peptide was evaluated in a glioblastoma animal model. In vitro transfection showed that the R3V6 peptide delivered antisense-ODN more ...

Reactive oxygen species: Sources, consequences and targeted therapy in Type-II Diabetes.

Oxidative stress has been considered as a central mediator in the progression of diabetic complication. The intracellular reactive oxygen species (ROS) leads to oxidative stress and it is raised from the mitochondria as well as by activation of 5 major pathways; increased polyol pathway flux, activation of Protein kinase C (PKC) pathway, increased formation of advanced glycation end products (AGEs), over activity of hexosamine pathway and increased Production of Angiotensin-II. The increased ROS through the...

Amphiphilic dendritic nanomicelle-mediated co-delivery of 5-fluorouracil and doxorubicin for enhanced therapeutic efficacy.

Combination cancer therapy has attracted considerable attention due to its enhanced antitumor efficacy and reduced toxicity granted by synergistic effects over monotherapy. The application of nanotechnology is expected to achieve coencapsulation of multiple anticancer agents with enhanced therapeutic efficacy. Herein, a unique nanomicelle based on amphiphilic dendrimer (AmD) consisting of a hydrophilic polyamidoamine dendritic shell and a hydrophobic polylactide core is developed for effectively loading and...

Thermosensitive liposomal cisplatin in combination with local hyperthermia results in tumor growth delay and changes in tumor microenvironment in xenograft models of lung carcinoma.

Treatment efficacy of a heat-activated thermosensitive liposome formulation of cisplatin (CDDP), known as HTLC, was determined in xenograft models of non-small-cell lung carcinoma. The short-term impact of local hyperthermia (HT) on tumor morphology, microvessel density and local inflammatory response was also evaluated. The HTLC formulation in combination with local HT resulted in a significant advantage in therapeutic effect in comparison with free drug and a non-thermosensitive liposome formulation of CD...

PRCosomes: Pretty Reactive Complexes Formed in Liposomes.

As a tribute to Pieter R. Cullis, this manuscript identifies a liposomal formulation that bears his initials: the PRCosomes. "Pretty" Reactive Complexes within liposomes were observed while the senior author of this manuscript completed his Ph.D. thesis under Pieter's supervision. The dye (safranine) was used as a tool to measure the magnitude of the transmembrane gradient generated with liposomes. The dye's redistribution is easily detected by eye and correlates with >98% encapsulation of the dye. This obs...

Glucosamine Anchored Doxorubicin Loaded Targeted Nano-niosomes: Pharmacokinetic, Toxicity and Pharmacodynamic Evaluation.

Efficacy of anticancer drug is limited due to non-selectivity and toxicities allied with the drug; therefore the heart of the present work is to formulate drug delivery systems targeted selectively towards cancer cells with minimal toxicity to normal cells.

Prodrugs for transdermal drug delivery- trends and challenges.

Prodrugs continue to attract significant interest in the transdermal drug delivery field. These moieties can confer favourable physicochemical properties on transdermal drug delivery candidates. Alkyl chain lengthening, pegylation are some of the strategies used for prodrug synthesis. It is usually important to optimize partition coefficient, water and oil solubilities of drugs. In this review, progress made in the field of prodrugs for percutaneous penetration is highlighted and the challenges discussed.


Quick Search
Advertisement